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The statements regarding the circulation of blood are as follows:
- Pulmonary circulation begins at the left atrium and ends at the right ventricle. (False)
- The systemic arteries begin as branches of the aorta. (True)
- The amount of blood that circulates through an organ increases as the organ becomes more metabolically active. (True)
- Systemic circulation begins at the left ventricle and ends at the right atrium. (True)
- The two caval veins drain blood from the body, except for the head. (False)
- Blood flows slows in capillaries but speeds up in veins. (True)
- Hepatic portal circulation enables the liver to store or modify substances in the blood coming from the digestive organs and spleen. (False)
- Blood in veins is kept moving by external forces as well as constriction of the veins themselves. (False)
Blood circulation may be defined as the physiological transportation methodology of arterial and/or venous blood through the vascular system and the heart chambers.
Therefore, each of the statements about blood circulation either true or false is described above.
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